If you have to construct an astronomical telescope, what type of lenses will you use? How will you arrange the lenses in the cylinders? Describe in brief with a diagram.

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Ineed the answer to question 1 , i’m desperate